| 摘要 |
408,914. Sash fasteners. WOODHAMS, W. L., 71, Madeley Road, Ealing, London. Dec. 13, 1933, No. 35035. [Class 44.] Release of a sash fastener from outside is prevented by an L-shaped member pivoted on a nail driven into the sash in such a position that it can be swung under the usual fastener arm with its vertical limb in the path of the arm. |
